Your device is now running the stock firmware.
Click on the or Firmware button within the tool.
Power down your BQ device completely. Hold the Volume Down (or Volume Up ) button and plug the USB cable into the PC.
Power off your phone. Boot into by holding Volume Down + Power until the bootloader screen triggers. Plug the device into your Windows 10 machine via USB. bq firmware flash tool windows 10 upd
In some advanced use cases (e.g., after bootloader unlocking), the fastboot method is preferred. This is especially useful for installing custom ROMs like LineageOS.
A native USB 2.0 port . USB 3.0/3.1 ports frequently cause timeout errors or handshake failures with older flashing utilities.
For BQ devices powered by MediaTek processors (such as the M series, E series, and many older models), the SP Flash Tool is often a more reliable option. This is especially recommended when the official BQ Flash Tool does not work or when the device is completely bricked and not entering Fastboot mode. Your device is now running the stock firmware
Hold the key while clicking Restart in the Windows Start Menu.
A progress bar at the bottom of the interface will turn different colors (red, yellow, yellow-green) as it formats and writes the system partitions. Do not touch or disconnect the cable during this time.
Before you begin, it's strongly advised to adhere to these safety measures: Hold the Volume Down (or Volume Up )
Once loaded, complete the standard Android on-screen setup wizard to restore your device. Troubleshooting Common Errors 1. The Tool Does Not Respond (Stuck on 0%)
Once the bootloader is unlocked, you will see two options: and Flash other firmware . To install the firmware you downloaded:
Flashing a device modifies its core system partitions. To prevent bricking your device, ensure you fulfill all the requirements listed below.
If you’re security-conscious, use a dedicated Windows 10 offline VM or an old laptop for flashing.